Hebrews 13:15 Through Jesus, therefore, let us continually offer to God a sacrifice of praise—the fruit of lips that openly profess HIS name.

Now based on the finished work of Christ, Chapters 1-13, let us continually offer up a sacrifice – a sacrifice of praise. Our sacrifice of praise is the fruit of our lips that openly profess HIS NAME. There is nothing left to do but praise the NAME of Jesus. Instead of offering up food and animal sacrifices, now as Christians we just continually offer up praise to Jesus. This is totally consistent with the OT.

Hosea 14:2 Take words with you and return to the LORD. Say to God: “Forgive all our sins and receive us graciously, that we may offer the fruit of our lips.”